Update limits.mdx (#20496)

removed "quick actions" naming

Author: kathayl

src/content/docs/browser-rendering/platform/limits.mdx

@@ -18,7 +18,7 @@ import { Render, Plan } from "~/components";
 | New browser instances per minute | 10 per minute [^1]  |
 | Browser timeout                  | 60 seconds [^1][^2] |
 
-## Quick Actions REST API
+## REST API
 
 | Feature                          | Limit               |
 | -------------------------------- | ------------------- |